Electrode



Ma'rch 3, 1942. R, R slzELVE 2,275,194

I ELECTRODE Filed Feb. 1, 1940 1. y 29h-. i Fig'. 2.

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mlullllllm 'III l" Ill Il n l Hmm' "lllullll ||I" unuuumm" (nunmmnmm /7 A A A Null* l INVENTORA /6 ROBERT RAYMOND S/zELovE 2,/ i BY m@ ATTORNEYS.,

. may be realized by indented` Mar. s,` 1942 UNITED STATES" PATENT OFFIC ELECTRODE Robert Raymond Sizelove,

Frederick G Kearny, N. J., a cor signor to umm Chemical Co., poration of New Jersey Irvington, N. J., as-

Inc.,

Application February l, 1940, Serial No. 316,746

1 Claim.

This invention relates to electrodes and, more particularly. to`electrodes used in the processes of electroplating and electrocleaning which are ladapted to be immersed in and conduct electrical current to an electrolytic bath.

In the past, electrodes in the form of a flat A plate usually rectangular in shape, having a flat surface 'and prevent ther.

edges or perimeter of the electrode which allows bath. l

It is an object of the present invention to provide an electrode in YVwhich electrical current is distributed throughout the surface area thereof.

rent will ow into an electrolytic bath from the surface area of the electrode.

Another object of the present invention is to provide an electrode to which gas bubbles will not adhere and interfere with the ow of electrical current into the electrolytlc bath.

Still another object ofA this invention is to provide an electrode which is economical in use and simple and inexpensive in construction.

Other objects of the invention will become apparent in the course of the following specification.

'I'he above and other objects of the invention vproviding an electrode adapted to be placed in an electrolytic bath facing another electrode, the body of said ridges, the tops of which are in a common vertical plane on one face of said electrode and the bottoms thereof are in a common vertical plane on the opposite face thereof. I'he sides of the ridges are thereby bearing -bars I0 are rectangular (C1. cor-zw as to forma grille having diamond-shaped spaces between mesh.

the following detailed In the drawing:

Figure 1 is a front elevational view of the electrode of this invention.

Figure 2 is a sectional view on the line 2-2 of Figure 1.

Like numerals the several views.

In the embodiment of the invention shown in the drawing, the letter A designates a front grille while a rear grille is designated by the letter B which grilles are fastened together preferably by welding and comprise the main body portion of the electrode. Each grille A and B is identical in construction to the other.

While it is possible to use only one of such grilles in the electrode of this invention, it is desirable to use two fastened together and so positioned in relation to one another that the adhereafter be more fully described.

The grille A is formed of a plurality of vertically disposed transversely extending bars I0. The shaped having a top surface II, a. front surface I2, a bottom surface I3 and a rear surface I 4.

'Ihe cross'bars I0 are shaped longitudinally to form alternately peaks I5 and valleys I6. The

front surface I2 of one cross-bar is connected at A the valley I6 thereof to the rear surface I4 of the succeeding bar III at its peak I5, the bars I0 a stepped relation to one another.

The bars III are turned so that the front surrefer to like parts throughout n The sides oi the ridges are inclined obliquely upwardly and downwardly away from the pealcs.

A diamond-shaped aperture I8 is thus formed, the top half of which bears a stepped relation to the bottom half. The rectangular shaped bars il) form a border around said diamond-shaped apertures. None of the flat surfaces of the sides of the bars l0, which form the sides of the dlamond-shaped apertures, are in alignment with the vertical plane of the grill. The ridges l1 and the edges formed by the meeting of the adjacent surfaces of the bar il) are in vertical planes which are in alignment with the vertical plane of the grill each of said edges being in a different horizontal plane.

In this manner, a large number of edges are provided along which the electrical current will travel, each edge being so positioned as to directly communicate with the electrolytic bath when immersed therein. All the flat surfaces are inclined upwardly or downwardly at an angle to thc various edges.

The grill B is constructed-similarly to the grille A and has a plurality of vertically dispo-sed transversely extending bars illa which, like the bars il), are rectangular shaped. The* bars ita have a top surface lla, a front surface 52a, a bottom surface i3d and a rear surface ida. The bars illa are also shaped longitudinally similarly to the Abars lll and forni peaks l5a and valleys liia. The plurality of bars lila are connected in the same manner as the bars i0 and form a grille having a stepped surface similar to the surface mond-shaped apertures ita. v

The grilles A and B are fastened together -one to the rearward of the other in such a position that the connecting points between .the adjacent bars ila of grille B are substantially adjacent the center ofthe aperture lil of the grille A and oi the grille A with a-plurality of adjacent diai the connecting points between the adjacent bars lil oi the grille A are substantially adjacent the center of the aperture ila of the grille.

Supporting hooks i9 and 2U of electrical conductive material are fastened to the electrode formed by the grilles A and B and are adapted to engage a bus bar 2i which is connected to one pole of an electrical source. The bus bar 2l-is adapted to hold the electrode in avertical'position in relation to an electrolytic bath.

The cross bar iii and ida ci the grilles A and B, respectively, are preferably nickel plated, as indicated by the numeral 22, so that gas bubbles from the electrolytic bath will not adhere to the surfaces thereof.

When the electrode of this invention is immersed in an electrolytic bath, and positioned on the bus bar 2i, all of the fiat surfaces cf the various bars lil and lila are at an angletd the horizontal and vertical planes of the electrolytic bath. The edges formed by the joining of the adjacent surfaces of the bars Ill and the joining of the surfaces of the bars Illa are presented toy the electrolytic bath in ditlerent horizontal to the surfaces, nor will bubbles adhere to the edges of the bar. Electrical current, therefore, will have a free unobstructed passage along the various edges oi the diamond-shaped mesh net-'- work of the grilles forming the electrode. In

this manner, electrical current is more evenly distributed throughout the electrolytic bath. The desired reaction in the solution may thereby be secured with a much weaker solution than heretofore. A The electrode of this invention may be use as either an anode or cathode and may-be used in a solution for cleaning plates or may be used in a solution for depositing metal on material being plated.

It is apparent that the specific illustration shown has been given by way oi illustration and not by way of `limitation and that the structure above described is subject to wide variation and modicatlon without departing from the scope or intent of the invention, all ci which variations and modifications are to be included within the scope of the present invention.

What is claimed is:

inv electrode vfor an electrocleaning bath, said electrode comprising two superposed interconnected grills extending parallel to each other in vertical planes, each of said grills comprising a plurality of transverse bars, each bar having the form of a rectangle in cross section which has shorter front and rear sides and longer top and bottom sides and which is obliquely inclined to said .vertical planes, the edges of the bars'between said front and top sides being situated in one vertical plane and the edges of the bars between said rear and bottomsldes being situated in another single vertical plane, each bar comprising a plurality of peak portions, a separate valley portion situated between each pair of peak portions, and obllduely inclined side portions ci equal size connecting the valley portions with the peak portions, each peak portion of a bar being connected to a valley portion of an adjacent bar, whereby said bars enclose diamondshaped apertures; the bars oi one grill being shifted in relation to the bars of the other grill to locate each peak portion and the valley portion connected thereto of the underlying grill substantially in the middle of an aperture of the upper grill, whereby the sldefportions of the two grills engage each other and are connected to each other substantially in the middle of the side portions.

ROBERT RAYMOND SIZELOVE. 

